linux-kernel - Re: 3.4-rc7 numa

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Message-ID: <20120521200118.GA12123@redhat.com>
Date:	Mon, 21 May 2012 16:01:18 -0400
From:	Dave Jones <davej@...hat.com>
To:	Linus Torvalds <torvalds@...ux-foundation.org>
Cc:	Linux Kernel <linux-kernel@...r.kernel.org>, linux-mm@...ck.org,
	KOSAKI Motohiro <kosaki.motohiro@...fujitsu.com>,
	Stephen Wilson <wilsons@...rt.ca>,
	Mel Gorman <mgorman@...e.de>, Christoph Lameter <cl@...ux.com>,
	Andrew Morton <akpm@...ux-foundation.org>
Subject: Re: 3.4-rc7 numa_policy slab poison.

On Mon, May 21, 2012 at 12:39:19PM -0700, Linus Torvalds wrote:

 > But there's not a lot of recent stuff. The thing that jumps out is Mel
 > Gorman's recent commit cc9a6c8776615 ("cpuset: mm: reduce large
 > amounts of memory barrier related damage v3"), which has a whole new
 > loop with that scary mpol_cond_put() usage. And there's we had
 > problems with vma merging..
 > 
 > Dave, how recent is this problem? Have you already tried older kernels?

I tried bisecting, but couldn't find a 'good' kernel.
I Went back as far as 3.0, before that I kept running into compile failures.
Newer gcc/binutils really seems to dislike 2.6.x now.

	Dave
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